Fitting



Nov. 9 1926.

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Patented Nov. 9,1926,

UNITED HOWARD A. SELAH, OF ERIE, PENNSYLVAN IA, ASSIGNOB T0 ERIE MALLEABLE IRON CGMPANY, 0F ERIE, PENNSYLVANIA, A CORPORATION .OF PENSYLVANIA. l

FITTING.

Application led September 5, 1925. Serial o. 54,775.

This invention is exemplifiedas a coupling to connect threadless conduits and comprises a contractible sleeve conforming in many respects to contractible sleeves used in other conduit fittings heretofore designed. Features and details of the invention will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as follows Fig 1 shows a side elevation, partly in section, of the coupling. Fig. 2 a section op thev line 2-2 in Fig. 1. I marks the contractible sleeve made contractible by a longitudinal slit 2. The sleeve has a tapered outer end 3 with flats 4 forming wrenchholds on the sleeve. The

. 'nner end of the sleeve is provided with a scrpthread 5. A. coupling sleeve 6 has screw t Veads at its center adapted to receive the screw threads 5 and is `tapered at 7 to conform to the taper 3 of the contractible sleeve. Con'- duits A are shown in place in the coupling.

The coupling is attached by placing the ends of 4the conduits in the contractible sleeves. By turnin the contractible sleeves the screws gradua y draw the sleeves into the coupling sleeve, thus through the wedging action, or tapered engagement of the sleeve contracting -the contractible sleeve into clamping engagement with the conduits.

What I claim asnew' is '1. In a fitting, the combination of a body having an opening having an inner portion screw threaded and an outer portion unthreaded; and a slotted sleeve in the opening having its inner end screw threaded to screw into the threads in the body and an intermediate portion-unthreaded, one of said unthreaded portions being tapered and in wedging engagement with the other unthreaded portion to contract the sleeve into clamping engagement with a conduit, saidV sleeve having a wrenchhold extension yprojecting from the body with the Sleeve in place,

2. In a fitting, the combination of a body vhaving an openlng having an inner portion screw threaded and an outer portion unthreaded; and a sleeve in theopenng having its inner end screw threaded to screw into the threads in the body and an intermediate portion unthreaded, one of said unthreaded portions being tapered and inb wedging engagement with the other unthreaded portion, said sleeve comprising slotted means permitting the--sleeve to contract in response to Said wedging action into clamping engagement with a conduitx with the inner wall of the sleeve throughout themajor portion of' its length contracting in parallel with the axis, said sleevehaving a wrenchhold e tension projecting from the body with the leeve in place.

3. In a fitting, the combination of a body having an opening' havingan inner portion screw threaded and an outer portion unthreaded; and a sleeve slotted throughoutv its length having its inner end screw .thread` ed to screw into the threads in the body and an intermediate portion unthreaded'ne.,V of said unthreaded portions being "tapered" and in 'wedging engagement with theother unthreaded portion to contract thejsleevm into clamping engagement with aconduit, said sleeve having a wrenchhold extension projecting from the body with the sleeve in place.

4. In a coupling, the combination of a body having an opening with inneriportions screw threaded and outer portions unthreadjso ed; slotted sleeves in the opening, each having screw threaded inner portions screwing unthreaded portion engaging an unthreaded portion of the body, one of the unthreaded engaging" portions at each end of the coupling belng tapered and in wedging engagement -with the other unthreaded portion at said end to contract the sleeve into clam ing engagement with a conduit, said sleeves aving wrenchhold extensions projecting from the body with the sleeves in place.

5. In a coupling, the combination of a body having an openingwith inner portions screw threaded and outer portions unthreaded; sleeves in the opening, each having a screw threaded inner portion screwing into a threaded portion ofthe body and an un# threaded portion engaging an unthreaded portion of the body, one of ther-. unthreaded engaging portions at each end of the coupling being tapered and in wedging engagement with the other unthreaded portion at said end, said sleeve comprising slotting means permitting the sleeve to contract in response to said wedging action into clamping engagement with a conduit with l.the inner wall of the sleeve throughoutthe major portion of its length contracting in parallel `With Vtheaiiis, said sleeves .havingV .Wrench-l hold extensions projecting fronfjth'ebody with the sleeves in place.

,6, In a coupling, the combination of a body having an opening with iner'portions screw threaded and outer portions Unthreaded; slotted sleeves in the opening, each slotted throughout its length and having a screw threaded inner portlon screwing lifi-fito a threaded portion ofthe body and an `unthreaded portion engaging an unthreaded! portion of the body, one of the unthreaded engaging 'portions at each end of 'the I'couplingbeing tapered and in wed ing engagementv with thel other unthreade said end `and contracting the sleeve in response to said wedgi'ng action into clamping HOWARD SELAH.

portion at 15 whereof I have 'hereunto Set 

